I just finished reading Cal Newport's book "Digital Minimalism" and I very much enjoyed it. Highly recommended.
I've already been doing a lot of the suggested practices, but now I want to read the book again, really let the philosophy sink in, and make more changes. I think his approach makes sense and helps to ensure the digital technology in your life isn't using you, but that you are using it with intention to help enrich your life and help you focus on what is most important.